OFPST_PORT reply (xid=0x2): 4 ports
  port  1: rx pkts=51, bytes=3940, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=39, bytes=2478, drop=?, errs=?, coll=?
  port  2: rx pkts=18, bytes=756, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=68, bytes=2856, drop=?, errs=?, coll=?
  port  3: rx pkts=0, bytes=0, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=20, bytes=2715, drop=?, errs=?, coll=?
  port LOCAL: rx pkts=0, bytes=0, drop=0, errs=0, frame=0, over=0, crc=0
           tx pkts=0, bytes=0, drop=0, errs=0, coll=0
